Improvement in cotton-gins



UNITED STATES PETER C. SAWYER, OF MACON, GEORGIA.

IMPROVEMENT lN COTTON-GINS.

Specification forming part of Letters Patent No. i39,820, dated June 10,1873; applicationled Mai-@h 26, 1873.

i making a part of this specification.

The nature of my invention consists particularly in the` constructionand arrangement of the cotton-box or hopper of a cotton-gin, as

will be hereinafter more fully set forth.

1n order to enable others skilled in the art to which my inventionappert-ains to make and use the same, yI will now proceed to describeits construction and operation, referring to the annexed drawings, inwhich- Figure 1 is a plan view, and Fig. 2 a longitudinal verticalsection, of a cotton-gin ernbodying my invention. Figs. 3 and 4 areviews, showing detached parts of the same.`

A represents the frame of a cotton-gin; B B are the saws placed ontheshaft C; and D represents the rotating stripping-brush, the shaft ofwhich isvparallel with the saw-shaft. These parts may be constructed andarranged in any of the known and usual ways. G represents the cotton-boxor hopper, the upper end of which is hinged to a bar, E, and this barattached by means of bolts a. a to the frame A above and in rearot'the'saw-shaft. The bolts a a pass throughislots b b in the bar E, sothat the same may be moved backward or forward and held at any pointdesired so a-s to adjust the upper end of the cotton-box to correspondwith the adjustment of its lower end, as hereinafter described. At eachend of the bar E, on the under side, are formed ratchet-teeth c c, whichengage with similar teeth formed on the frame, thus holding the barfirmly in whatever position desired. To

the lower part of the box or hopper G are attached the ribs d d, whichfit in between the saws B B, the lower part of said ribs being straightand the upper part curved, as shown in Fig. 2, and attached to thecotton-board f which forms the upper part of the hopper, or, in `otherwords, connects the sides of the same. The lower end of the cotton-boxor hopper G is supported and adjusted by means of slotted rrests h,which are provided with ratchet-teeth and held in any desired positionby bolts.

By moving the rests h h out or in the angle y at which the hopper hangsis correspondingly changed, but if this were done without any change inthe location of the upper part of the hopper the distance the saws wereto project above the ribs d d could not be properly regnlated, but bymaking the upper part of the hopper adjustable, as above described, bymeans ot' the slotted bar E, the whole can be regulated in any mannerdesired. H represents the front of the cotton-box, which is hung in thesides of the box on a line above the saw-shaft leaving an opening kbetweenA it and the cotton-board j' for feeding the cotton. The lowerend of the swinging front H is supported and adjusted by slottedratchetblocks i, and is provided with a seed-board,

m, on the inner side near the lower end, as

shown in Fig. 2. The upper part of the swinging front H, the inner sideof the cotton-board f, and the upper parts ofthe ribs d d, are curved insuch a manner as to form the interior of the box perfectly round,withoutany sharp corners or abutments, thereby preventing the cottonroll fromclogging. The interior of the box is also made in such a manner as to bewider at the front than at the rear, the sides of the box being made orprovided with inclined `pieces 'n n, as shown in Fig. 1. This allows thecotton-roll, as it falls from the rear to lthe front, to expand orspreadand thus every time present a new surface to the saws. Tofacilitate this expanding or spreading of the roll I attach ribs p p tothe inner or under side of the swinging front H, which ribs are arrangedto incline from the center toward both sides, as shown in Fig. 4. Theupper or hinged end of the swinging front H is also adjustable by meansof a series of holes, so that the point at which it is hinged may bechanged as desired, according to the condition of the cotton to bepassed through the gin.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. The `cotton-box Gr, havingits end Walls ing fed through the topopening, will be acted upon by the saws, carried around and be expandedin the front of the box, as and for the purposes set forth.

2. The cotton-box G, hinged at its top to the serrated bar E, which isslotted and se cured by bolts for the forward and backwardadjustment ofthe top of the box, said box being adjusted outward and inward at itsbottom by the slotted block or blocks h h, al1 su'bstantially as and forthe purposes set forth.

3. The swinging front H, hinged at its up per end, and both the upperand lower ends have hereunto set my hand this 26th day of March, 1873.

PETER G. SAWYER. Witnesses:

A. N. MARR, C. L. EVERT.

